R help - Mar 2003 - RE: Text Rotation (was: Take care with codes()!)

You can use the graphics parameter "srt" to rotate displayed text by a
specified number of degrees, e.g. srt=45 to put it on an angle, srt=90 to
put it vertical.  

If you do this, may need to modify the call to text to increase ylim and
change the plot location to give you more room.

I'm working to update the 'balloonplot' function in the gregmisc
package now
to handle this case gracefully.

-Greg

> -----Original Message-----
> From: Ramon Alonso-Allende [mailto:allende at cnb.uam.es]
> Sent: Saturday, March 08, 2003 6:41 AM
> To: Warnes, Gregory R
> Cc: 'ripley at stats.ox.ac.uk'; 'r-help at
stat.math.ethz.ch'
> Subject: Re: Take care with codes()! (was [R] type of representation)
> 
> 
> Hi
> 
> I have been ussing this code displayed while a go to do 
> balloons plots.
> 
> My problem is that the labels of the data i'm working on now 
> are to big 
> and they overlap in the X axis.
> 
> Is there any way i can plot the text vertically or with some 
> inclination?
> 
> 
> Thanks
> 
> Ramon
> 
> Warnes, Gregory R wrote:
> > Ahh yes, sorry about that.
> > 
> > Here's the corrected snippet:
> > 
> > # Create an Example Data Frame Containing Car x Color data
> > carnames <-
c("bmw","renault","mercedes","seat")
> > carcolors <-
c("red","white","silver","green")
> > datavals <- round(rnorm(16, mean=10, sd=4),1)
> > data <- data.frame(Car=rep(carnames,4),
> >                    Color=rep(carcolors, c(4,4,4,4) ),
> >                    Value=datavals )
> > # show the data
> > data
> > 
> > # plot the Car x Color combinations, using 'cex' to specify 
> the dot size
> > plot(x=as.numeric(data$Car),     # as.numeric give numeric values
> >      y=as.numeric(data$Color), 
> >      cex=data$Value/max(data$Value)*12,  # standardize size 
> to (0,12)
> >      pch=19,  # filled circle
> >      col="skyblue", # dot color
> >      xlab="Car", # x axis label
> >      ylab="Color", # y axis label
> >      xaxt="n", # no x axis lables
> >      yaxt="n", # no y axis lables
> >      bty="n",  # no box around the plot
> >      xlim=c(0,nlevels(data$Car  )+0.5), # extra space on 
> either end of plot
> >      ylim=c(0.5,nlevels(data$Color)+1.5)  # so dots don't 
> cross into margins
> >      )
> > 
> > # add text labels
> > text(x=1:nlevels(data$Car), y=nlevels(data$Car)+1, 
> labels=levels(data$Car))
> > text(x=0, y=1:nlevels(data$Color), labels=levels(data$Color) )
> > 
> > # add borders between cells
> > abline(v=(0:nlevels(data$Car)+0.5))
> > abline(h=(0:nlevels(data$Color)+0.5))
> > 
> > # annotate with actual values
> > text(x=as.numeric(data$Car),     # as.numeric give numeric values
> >      y=as.numeric(data$Color), 
> >      labels=format(data$Value),       # label value
> >      col="black", # textt color
> >      )
> > 
> > # put a nice title
> > title(main="Car by Color Popularity\n(Dot size proportional 
> to popularity)")
> > 
> > 
> > -Greg
> > 
> > 
> >>-----Original Message-----
> >>From: ripley at stats.ox.ac.uk [mailto:ripley at stats.ox.ac.uk]
> >>Sent: Friday, January 03, 2003 1:53 PM
> >>To: Warnes, Gregory R
> >>Cc: 'allende at gredos.cnb.uam.es'; 'r-help at
stat.math.ethz.ch'
> >>Subject: RE: Take care with codes()! (was [R] type of 
> representation)
> >>
> >>
> >>From the help page of codes():
> >>
> >>     Normally `codes' is not the appropriate function to use
with an
> >>     unordered factor.  Use `unclass' or `as.numeric' to
extract the
> >>     codes used in the internal representation of the 
> factor, as these
> >>     do not assume that the codes are sorted.
> >>
> >>and this is one of the `normally' cases.  Your code will only
work
> >>correctly if the levels are in alphabetical order (in the 
> >>locale in use).
> >>
> >>On Fri, 3 Jan 2003, Warnes, Gregory R wrote:
> >>
> >>
> >>>How about this snippet:
> >>>
> >>># Create an Example Data Frame Containing Car x Color data
> >>>carnames <-
c("bmw","renault","mercedes","seat")
> >>>carcolors <-
c("red","white","silver","green")
> >>>datavals <- round(rnorm(16, mean=10, sd=4),1)
> >>>data <- data.frame(Car=rep(carnames,4),
> >>>                   Color=rep(carcolors, c(4,4,4,4) ),
> >>>                   Value=datavals )
> >>># show the data
> >>>data
> >>>
> >>># plot the Car x Color combinations, using 'cex' to
specify
> >>
> >>the dot size
> >>
> >>>plot(x=codes(data$Car),     # codes give numeric values
> >>>     y=codes(data$Color),
> >>>     cex=data$Value/max(data$Value)*12,  # standardize size 
> >>
> >>to (0,12)
> >>
> >>>     pch=19,  # filled circle
> >>>     col="skyblue", # dot color
> >>>     xlab="Car", # x axis label
> >>>     ylab="Color", # y axis label
> >>>     xaxt="n", # no x axis lables
> >>>     yaxt="n", # no y axis lables
> >>>     bty="n",  # no box around the plot
> >>>     xlim=c(0,nlevels(data$Car  )+0.5), # extra space on 
> >>
> >>either end of plot
> >>
> >>>     ylim=c(0.5,nlevels(data$Color)+1.5)  # so dots don't 
> >>
> >>cross into margins
> >>
> >>>     )
> >>>
> >>># add text labels
> >>>text(x=1:nlevels(data$Car), y=nlevels(data$Car)+1, 
> >>
> >>labels=levels(data$Car))
> >>
> >>>text(x=0, y=1:nlevels(data$Color), labels=levels(data$Color) )
> >>>
> >>># add borders between cells
> >>>abline(v=(0:nlevels(data$Car)+0.5))
> >>>abline(h=(0:nlevels(data$Color)+0.5))
> >>>
> >>># annotate with actual values
> >>>text(x=codes(data$Car),     # codes give numeric values
> >>>     y=codes(data$Color),
> >>>     labels=format(data$Value),       # label value
> >>>     col="black", # textt color
> >>>     )
> >>>
> >>># put a nice title
> >>>title(main="Car by Color Popularity\n(Dot size
proportional
> >>
> >>to popularity)")
> >>
> >>>
> >>>-Greg
> >>>
> >>>
> >>>>-----Original Message-----
> >>>>From: allende at gredos.cnb.uam.es [mailto:allende at
gredos.cnb.uam.es]
> >>>>Sent: Friday, January 03, 2003 4:46 AM
> >>>>To: r-help at stat.math.ethz.ch
> >>>>Cc: allende at gredos.cnb.uam.es
> >>>>Subject: [R] type of representation
> >>>>
> >>>>
> >>>>Hi
> >>>>
> >>>>I have some data that i want to plot but i don't find
how to
> >>>>do it. I have car
> >>>>types (bmw,renault,mercedes,seat ...), colors and a number
> >>>>for each car
> >>>>type-color relation.I want to come up with a matrix
> >>>>representation of cars vs
> >>>>colors where in each intersection i could set a dot
> >>>>proportional in size to my
> >>>>third variable.
> >>>>
> >>>>
> >>>>Can anybody give me a clue of hoe to come up with such 
> >>
> >>representation.
> >>
> >>>>Thanks
> >>>>
> >>>>Ramon
> >>>>
> >>>>______________________________________________
> >>>>R-help at stat.math.ethz.ch mailing list
> >>>>http://www.stat.math.ethz.ch/mailman/listinfo/r-help
> >>>>
> >>>
> >>>
> >>>LEGAL NOTICE\ Unless expressly stated otherwise, this 
> >>
> >>message is ... [[dropped]]
> >>
> >>>______________________________________________
> >>>R-help at stat.math.ethz.ch mailing list
> >>>http://www.stat.math.ethz.ch/mailman/listinfo/r-help
> >>>
> >>
> >>-- 
> >>Brian D. Ripley,                  ripley at stats.ox.ac.uk
> >>Professor of Applied Statistics, 
http://www.stats.ox.ac.uk/~ripley/
> >>University of Oxford,             Tel:  +44 1865 272861 (self)
> >>1 South Parks Road,                     +44 1865 272866 (PA)
> >>Oxford OX1 3TG, UK                Fax:  +44 1865 272595
> >>
> > 
> > 
> > 
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> > 
> 
> -- 
> Ramon Alonso-Allende Erhardt			Tel: 91 585 46 76
> Protein Design Group		   		fax: 91 585 45 06
> CNB/CSIC Campus U. Autonoma. Cantoblanco  Madrid 28049
> http://www.pdg.cnb.uam.es/allende/index.html
> 
>